If you are in a rural area with neighbors that run cattle, talk to your neighbors. I would see if I could buy a few calves from a neighbor at a reasonable price. That way you know what you are getting; sale barn calves are stressed & frequently get sick. Also, you said you want to make money.....the profit margin in cattle is slim in a good year and nonexistent in a bad one. The goal is to put in AS LITTLE money as possible, it help to start with healthy, minimally stressed calves. Preferably vaccinated and castrated prior to purchase. If making money is the goal, I wouldn't bother with cattle. If you like cows & just want a self supporting hobby, go for it.